Serial acquirer Robert F.X. Sillerman — the one-time larger-than-life owner of Elvis Presley Enterprises — is at it again: his online Viggle is launching a long-shot purchase of the larger rival GetGlue. Photo: AP

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Media entrepreneur Robert Sillerman has another idea.

The 64-year-old chairman and founder of Viggle, the money-losing New York company that rewards subscribers who “check into” TV shows, said yesterday the company would buy rival GetGlue for $84 million in cash and stock.

News of the deal sent Viggle shares soaring 58 percent, to $1.75 — after having tumbled from a 2012 high of $17.80 as the company posted a loss of $96.5 million in the first half of the year on sales of just $1.7 million.